Allah's Messenger (ﷺ) said: "I have been ordered (by Allah) to fight against
the people until they testify that none has the right to be worshipped
but Allah and that Muhammad is Allah's Messenger (ﷺ), and offer the prayers
perfectly and give the obligatory charity, so if they perform that,
then they save their lives and property from me except for Islamic laws
and then their reckoning (accounts) will be done by Allah."
Sahih al-Bukhari Book 2, Hadith 18